准分子紫外激光引发丙烯酸聚合反应的初步研究

采用KrF准分子激光 (2 4 8nm)引发了丙烯酸的聚合反应。用GPC凝胶色谱对分子量进行了测定 ,初步探索了紫外激光引发的丙烯酸聚合规律。实验结果表明 ,加入H2 O2 后的聚合反应为自由基聚合反应。在此实验的范围内 ,聚合得到的聚丙烯酸的分子量随着丙烯酸水溶液浓度的降低、激光辐照时间的减少和单脉冲能量的增加而增加。

Primary Study on Polymerization of Acrylic Acid Arisen by Excimer Laser

In this paper, polymerization of acrylic acid was induced by excimer laser (248 nm). The molecular weights of polymers of acrylic acid were measured by GPC gelatin chromatogram. The rule of polymerization of acrylic acid was also explored. The results of experiments show that the polymerization is a kind of radical induced polymerization adding H 2O 2 as photo initator. In the experiments, the molecular weights of polyacrylic acid can be increased when the concentration of acrylic acid solution is diluted; the laser irradiating time decrease and the power of each pulse increases.